Drug interactions
Losartan + Nitroglycerin rectal
Severity: Moderate
Losartan and Nitroglycerin rectal: moderate interaction.
Last updated
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
Nitroglycerin is a vasodilator, and combining it with losartan can produce additive hypotension, with dizziness or syncope. The risk is higher with volume depletion or upright posture.
What this interaction means in plain words
Losartan and Nitroglycerin rectal can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Why it happens
Additive vasodilation and blood pressure lowering through different pathways.
What to do
Monitor blood pressure and orthostatic symptoms, and advise patients to rise slowly and report lightheadedness.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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Other interactions of Losartan
- Aliskiren + Losartan Contraindicated
- Losartan + Sparsentan Contraindicated
- Amifostine + Losartan Major
- Amiloride + Losartan Major
- Amlodipine-benazepril + Losartan Major
- Amlodipine-hydrochlorothiazide-valsartan + Losartan Major
Frequently asked questions
Can I take Losartan with Nitroglycerin rectal?
MediHelp rates the interaction as moderate. Losartan and Nitroglycerin rectal can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Nitroglycerin is a vasodilator, and combining it with losartan can produce additive hypotension, with dizziness or syncope. The risk is higher with volume depletion or upright posture.
How serious is the interaction between Losartan and Nitroglycerin rectal?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor blood pressure and orthostatic symptoms, and advise patients to rise slowly and report lightheadedness.
What other medicines interact with Losartan?
MediHelp also lists interactions of Losartan with, for example, Aliskiren, Sparsentan, Amifostine. The full list is on the Losartan page.
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